make ffi/util module local

frontend/apps/filemanager/filemanager.lua

@@ -15,6 +15,7 @@ local Geom = require("ui/geometry")
 local Event = require("ui/event")
 local DEBUG = require("dbg")
 local _ = require("gettext")
+local util = require("ffi/util")
 
 local FileManager = InputContainer:extend{
     title = _("FileManager"),

frontend/apps/reader/modules/readeractivityindicator.lua

@@ -1,5 +1,6 @@
 local EventListener = require("ui/widget/eventlistener")
 local Device = require("ui/device")
+local util = require("ffi/util")
 -- lipc
 
 local ReaderActivityIndicator = EventListener:new{}

frontend/ui/device/screen.lua

@@ -1,6 +1,7 @@
 local Blitbuffer = require("ffi/blitbuffer")
 local Geom = require("ui/geometry")
 local DEBUG = require("dbg")
+local util = require("ffi/util")
 
 -- Blitbuffer
 -- einkfb

frontend/ui/input.lua

@@ -6,6 +6,7 @@ local Screen = require("ui/screen")
 local Math = require("optmath")
 local DEBUG = require("dbg")
 local _ = require("gettext")
+local util = require("ffi/util")
 
 -- constants from <linux/input.h>
 local EV_SYN = 0

frontend/ui/timeval.lua

@@ -1,3 +1,5 @@
+local util = require("ffi/util")
+
 local TimeVal = {
     sec = 0,
     usec = 0,

frontend/ui/uimanager.lua

@@ -4,6 +4,7 @@ local Input = require("ui/input")
 local Event = require("ui/event")
 local DEBUG = require("dbg")
 local _ = require("gettext")
+local util = require("ffi/util")
 
 -- initialize output module, this must be initialized before Input
 Screen:init()

frontend/ui/widget/filechooser.lua

@@ -2,6 +2,7 @@ local Menu = require("ui/widget/menu")
 local Screen = require("ui/screen")
 local UIManager = require("ui/uimanager")
 local DEBUG = require("dbg")
+local util = require("ffi/util")
 -- lfs
 local ffi = require("ffi")
 ffi.cdef[[

frontend/ui/widget/inputtext.lua

@@ -10,6 +10,7 @@ local Device = require("ui/device")
 local Screen = require("ui/screen")
 local Font = require("ui/font")
 local DEBUG = require("dbg")
+local util = require("ffi/util")
 
 local InputText = InputContainer:new{
     text = "",